According to the complaint, nearly 4,500 names have been removed because a mailing sent to the voters' addresses were returned as undeliverable.

The National Voter Registration Act prevents boards of election from removing voter names from the rolls within 90 days of an federal election.

Companies are paying workers time off on election day to go vote:

But state law doesn't say anything about individual challenges.

One of the lawsuits goals is to restore voters' names that have been removed.

Related: See early voters head to the polls:

17PHOTOS

Early voting underway in some states

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Early voting underway in some states

A sign indicating no phones are allowed in ballot booths is displayed as a man casts his ballot during early voting at the San Diego County Elections Office in San Diego, California, U.S., November 7, 2016. REUTERS/Mike Blake

An attendee holds a sign reading 'Nasty Women Vote' during of a campaign event with Hillary Clinton, 2016 Democratic presidential nominee, in Detroit, Michigan, U.S., on Friday, Nov. 4, 2016. As the U.S. presidential race heads into its final weekend, Donald Trump is showing strength in Iowa and Ohio pre-Election Day voting, while Clinton's advantage in early balloting looks stronger in North Carolina and Nevada. Photographer: Daniel Acker/Bloomberg via Getty Images

A man holds his ballot sleeve as he lines up to vote at an early voting polling centre in Miami, Florida on November 3, 2016. / AFP / RHONA WISE (Photo credit should read RHONA WISE/AFP/Getty Images)

A young boy stretches as he stands next to a woman filling out her ballot during early voting at a polling station inside Truman College on October 31, 2016 in Chicago, Illinois. / AFP / Joshua Lott (Photo credit should read JOSHUA LOTT/AFP/Getty Images)

A man walks past the Early Vote Center in downtown Minneapolis, Minnesota on October 5, 2016.
Voters in Minnesota can submit their ballot for the General Election at locations across the state every day until Election Day on November 8, 2016. / AFP / STEPHEN MATUREN (Photo credit should read STEPHEN MATUREN/AFP/Getty Images)

PORTLAND, ME - OCTOBER 18: Early voters in Portland. Kaila Moore, left, and Justin Chamberlain, both of Portland, seal their ballots after voting early at City Hall on Tuesday, Oct. 18, 2016. (Photo by Derek Davis/Portland Press Herald via Getty Images)

CHICAGO, IL - OCTOBER 18: Residents cast ballots for the November 8 election at an early voting site on October 18, 2016 in Chicago, Illinois. With three weeks to go until election day, polls show Democratic candidate Hillary Clinton with a lead over GOP rival Donald Trump. (Photo by Scott Olson/Getty Images)

Voters cast ballots as early absentee voting began ahead of the U.S. presidential election in Medina, Cleveland, Ohio, U.S. October 12, 2016. REUTERS/Aaron Josefczyk

US President Barack Obama votes early at the Cook County Office Building in Chicago, Illinois, October 7, 2016. Obama cast an early ballot on Friday, highlighting a Democratic drive to get voters to the polls even before November 8. During an unannounced visit, Obama stood before a voting machine at the Chicago Board of Elections office, punched in his choice and smirked when asked who he had voted for. / AFP / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

Poll workers look on as US President Barack Obama (C) gestures towards the press as he votes early at the Cook County Office Building in Chicago, Illinois, October 7, 2016. Obama cast an early ballot on Friday, highlighting a Democratic drive to get voters to the polls even before November 8. During an unannounced visit, Obama stood before a voting machine at the Chicago Board of Elections office, punched in his choice and smirked when asked who he had voted for. / AFP / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

A man registers to vote at the Early Vote Center in northeast Minneapolis, Minnesota on October 5, 2016. Voters in Minnesota can submit their ballot for the General Election at locations across the state every day until Election Day on November 8, 2016. / AFP / STEPHEN MATUREN (Photo credit should read STEPHEN MATUREN/AFP/Getty Images)

Joseph and Maria Caruso vote inside the Early Vote Center in downtown Minneapolis, Minnesota after work on October 5, 2016. Voters in Minnesota can submit their ballot for the General Election at locations across the state every day until Election Day on November 8, 2016. / AFP / STEPHEN MATUREN (Photo credit should read STEPHEN MATUREN/AFP/Getty Images)

A bucket of 'I Voted' stickers inside the Early Vote Center in downtown Minneapolis, Minnesota on October 5, 2016. Voters in Minnesota can submit their ballot for the General Election at locations across the state every day until Election Day on November 8, 2016. / AFP / STEPHEN MATUREN (Photo credit should read STEPHEN MATUREN/AFP/Getty Images)

MINNEAPOLIS, MN - SEPTEMBER 23: Signage at an early voting center on September 23, 2016 in Minneapolis, Minnesota. Minnesota residents can vote in the general election every day until Election Day on November 8. (Photo by Stephen Maturen/Getty Images)

MINNEAPOLIS, MN - SEPTEMBER 23: Minneapolis resident Robin Marty takes a selfie with an 'I Voted' sign after voting early at the Northeast Early Voting Center on September 23, 2016 in Minneapolis, Minnesota. Minnesota residents can vote in the general election every day until Election Day on November 8. (Photo by Stephen Maturen/Getty Images)

Laika (last name not given) poses for a portrait with his 'I Voted! Did You?' wrist band after voting early at a polling station inside Truman College on October 31, 2016 in Chicago, Illinois. / AFP / Joshua Lott (Photo credit should read JOSHUA LOTT/AFP/Getty Images)